That's a good question how many do you need I think I've got a few in gray I know I have a few in the ugly beige or tan but I do believe I have a few gray and they may even have the pieces of foam that go in the bottom that protect the screw and keep it from rusting I have to go look and know what positions you need they would be easily looked up on any Toyota website or microfiche or whatever you used to look up parts with I don't know the numbers by heart
I guess I can't message you directly. I just need one gray, and am happy to buy it from you. No need for the foam (but would need to know what kind of screw). How can I get in touch with you?
Body and interior, then sub armrest and visor, https://www.amayama.com/en/catalogs/toyota/prius/2-hatchback-left-xw20-2005-r-2819/body-and-interior-3
The -B3 and -E2 on the end denotes the color, presumably gray and beige. I'm sorry, but I don't know which is which. You might have luck using the Toyota parts site and entering in the part number which might show the color in the description. Otherwise contact Amayama to confirm which color is which.